Ultrafast Laser Microwelding using Filamentation - Osaka University
Ultrafast Laser Microwelding using Filamentation - Osaka University
Ultrafast Laser Microwelding using Filamentation - Osaka University
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Comparison with ns-pulse welding<br />
30<br />
Joint strength [MPa]<br />
20<br />
10<br />
Femtosecond<br />
pulse<br />
Nanosecond<br />
pulse<br />
< 1/100 reduction<br />
0<br />
10 -1 10 0 10 1 10 2<br />
Pulse energy [µJ]<br />
Lower energy welding is possible by <strong>using</strong> fs pulses.<br />
Femtosecond pulse: 800 nm, 130 fs, 1 kHz<br />
Nanosecond pulse: 527 nm, 600 ns, 1 kHz<br />
Translation speed: 1 mm/s<br />
21
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